Titel
CuSO4/[Cu(NH3)4]SO4-Composite Thermochemical Energy Storage Materials
Autor*in
Danny Müller
Institute of Applied Synthetic Chemistry, TU Wien
Christian Knoll
Institute of Applied Synthetic Chemistry, TU Wien
... show all
Abstract
The thermochemical energy-storage material couple CuSO4/[Cu(NH3)4]SO4 combines full reversibility, application in a medium temperature interval (<350 °C), and fast liberation of stored heat. During reaction with ammonia, a large change in the sulfate solid-state structure occurs, resulting in a 2.6-fold expansion of the bulk material due to NH3 uptake. In order to limit this volume work, as well as enhance the thermal conductivity of the solid material, several composites of anhydrous CuSO4 with inorganic inert support materials were prepared and characterized with regard to their energy storage density, reversibility of the storage reaction, thermal conductivity, and particle morphology. The best thermochemical energy storage properties were obtained for a 10:1 CuSO4-sepiolite composite, combining an attractive energy storage density with slightly improved thermal conductivity and decreased bulk volume work compared to the pure salt.
Stichwort
CuSO4/[Cu(NH3)4]SO4composite materialthermal conductivitythermochemical energy storagethermochemistry
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Nanomaterials
Band
10
Ausgabe
12
ISSN
2079-4991
Erscheinungsdatum
2020
Publication
MDPI AG
Erscheinungsdatum
2020
Zugänglichkeit
Rechte
Rechteangabe
© 2020 by the authors
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